13c6b2f0b6
reading a register/attempting DMA. Now it'll wait for a certain number
of seconds rather than a certain number of times through the loop
before deciding that it's timed out and resetting the hardware. Also,
add more timeout handling, and reset the draw state after resetting the
engine.
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
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* Copyright © 2004 Eric Anholt
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Eric Anholt not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Eric Anholt makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL ERIC ANHOLT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Header$ */
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#ifndef _ATI_DMA_H_
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#define _ATI_DMA_H_
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#define DMA_PACKET0(reg, count) \
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(ATI_CCE_PACKET0 | (((count) - 1) << 16) | ((reg) >> 2))
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#define DMA_PACKET1(reg1, reg2) \
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(ATI_CCE_PACKET1 | \
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(((reg2) >> 2) << ATI_CCE_PACKET1_REG_2_SHIFT) | ((reg1) >> 2))
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#define DMA_PACKET3(type, count) \
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((type) | (((count) - 1) << 16))
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#if 0 /* CCE non-debug */
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#define RING_LOCALS CARD32 *__head; int __count
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#define BEGIN_DMA(n) \
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do { \
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if ((atis->indirectBuffer->used + 4*(n)) > \
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atis->indirectBuffer->size) { \
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ATIFlushIndirect(atis, 1); \
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} \
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__head = (CARD32 *)((char *)atis->indirectBuffer->address + \
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atis->indirectBuffer->used); \
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__count = 0; \
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} while (0)
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#define END_DMA() do { \
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atis->indirectBuffer->used += __count * 4; \
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} while (0)
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#else
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#define RING_LOCALS CARD32 *__head; int __count; int __total
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#define BEGIN_DMA(n) \
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do { \
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if ((atis->indirectBuffer->used + 4*(n)) > \
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atis->indirectBuffer->size) { \
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ATIFlushIndirect(atis, 1); \
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} \
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__head = (CARD32 *)((char *)atis->indirectBuffer->address + \
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atis->indirectBuffer->used); \
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__count = 0; \
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__total = n; \
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} while (0)
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#define END_DMA() do { \
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if (__count != __total) \
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FatalError("count != total (%d vs %d) at %s:%d\n", \
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__count, __total, __FILE__, __LINE__); \
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atis->indirectBuffer->used += __count * 4; \
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} while (0)
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#endif
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#define OUT_RING(x) do { \
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__head[__count++] = (x); \
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} while (0)
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#define OUT_RING_F(x) OUT_RING(GET_FLOAT_BITS(x))
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#define OUT_REG(reg, val) \
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do { \
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OUT_RING(DMA_PACKET0(reg, 1)); \
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OUT_RING(val); \
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} while (0)
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#define TIMEOUT_LOCALS struct timeval _target, _curtime
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static inline Bool
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tv_le(struct timeval *tv1, struct timeval *tv2)
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{
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if (tv1->tv_sec < tv2->tv_sec ||
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(tv1->tv_sec == tv2->tv_sec && tv1->tv_usec < tv2->tv_usec))
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return TRUE;
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else
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return FALSE;
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}
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#define WHILE_NOT_TIMEOUT(_timeout) \
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gettimeofday(&_target, NULL); \
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_target.tv_usec += ((_timeout) * 1000000); \
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_target.tv_sec += _target.tv_usec / 1000000; \
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_target.tv_usec = _target.tv_usec % 1000000; \
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while (gettimeofday(&_curtime, NULL), tv_le(&_curtime, &_target))
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#define TIMEDOUT() (!tv_le(&_curtime, &_target))
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dmaBuf *
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ATIGetDMABuffer(ATIScreenInfo *atis);
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void
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ATIFlushIndirect(ATIScreenInfo *atis, Bool discard);
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void
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ATIDMASetup(ScreenPtr pScreen);
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void
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ATIDMATeardown(ScreenPtr pScreen);
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#endif /* _ATI_DMA_H_ */
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